Chair



FIG. 1 is a perspective view illustrating my design for a chair.

FIG. 2 is a front view thereof.

FIG. 3 is a right-side view thereof.

FIG. 4 is a rear view thereof.

FIG. 5 is a left-side view thereof.

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in FIGS. 1 through 7 show portions of the article that form no part of the claimed design. 

CLAIM The ornamental design for a chair, as shown and described. 